package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {

    /**
     * 查询购物车列表
     * @return
     */
    @Select("select * from shopping_cart where user_id = #{userId}")
    List<ShoppingCart> list(ShoppingCart shoppingCart);

     /**
      * 插入购物车
      * @param shoppingCart
      */

    void insert(ShoppingCart shoppingCart);
     /**
      * 根据用户id查询购物车列表
      * @param shoppingCart
      * @return
      */

    List<ShoppingCart> listByUserId(ShoppingCart shoppingCart);

    /**
     * 清空购物车
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteAll(Long userId);

   @Update("update shopping_cart set number = #{number} where id = #{id}")
    void update(ShoppingCart cart);
}